engine help please

[usmcchevy]

Originally Posted by 1sik7t2

so you agree that my o3' pcm won't work with my 05' eng/tranny? the pcm was sold to me by a guy here on this forum who WAS my friend...i think he knew it wouldnt work because he disappeared soon after he sold it to me....so sounds like i need a oem pcm, then have it flashed to my specs, as long as it's a 05' 6.0/4l80e trans?

It will work. The only problem substituting a 03 pcm with a 05 PCM is Drive by wire (DBW) which 05+ have. The vans seem to be a little behind on everything and didnt get DBW until 06.